02.1-T1-TotalD

What is the geographic range of a population?

• The area where a species has gone extinct
• The places where a population lives
• The density of individuals in a given area
• The distribution pattern of organisms

What was the original range of sea otters before they were hunted?

• From Baja California to Alaska
• Only along the California coastline
• From Venezuela to Boston
• Around the entire Pacific Ocean

Why are southern sea otters still considered endangered?

• They are hunted for their fur
• They have a limited habitat range
• They are competing with lionfish
• Their population is decreasing rapidly

How do sea otters help maintain kelp forests?

• By eating the kelp
• By providing nutrients to the kelp
• By preying on animals that eat kelp
• By creating habitats within the kelp

Where are lionfish originally native?

• The Atlantic Ocean
• The Caribbean Sea
• The Gulf of Mexico
• The tropical Pacific Ocean

5. Why are fisheries and biologists worried about lionfish in the Atlantic?

• They compete with sea otters
• They are becoming endangered
• They prey on many native fish species
• They are destroying kelp forests

What is the geographic range of a population?

• The density of individuals in an area
• The places where a population lives
• The distribution pattern of individuals
• The age structure of a population

What is the current status of the sea otter's range compared to its original size?

• It has expanded beyond its original size
• It remains the same as its original size
• It is only a fraction of its original size
• It has shifted to a completely different area

What is population density?

• The total number of individuals in a population
• The number of individuals per unit area
• The distribution pattern of a population
• The age structure of a population

At what density have lionfish been found in some invaded areas?

• Over 200 adults per acre
• Less than 50 adults per acre
• Exactly 100 adults per acre
• Over 1000 adults per acre